{

  function _jiaocha() {
    interface Person {
      name: string;
      age: number;
    }

    interface Runner {
      run: string;
    }

    const xiaomin: Person & Runner = {
      name: '1',
      age: 18,
      run: 'runner'
    }

  }

  function _lianhe() {
    interface PersonOne {
      name: string;
      age: number;
    }

    interface PersonTwo {
      weight: number;
    }

    const person: PersonOne | PersonTwo = {
      name: 'person',
      age: 18,
      weight: 20
    }
    console.log(person)

  }

  // _jiaocha()
  _lianhe()
}